soc/intel/meteorlake: Hide PMC and IOM devices
Hide these ACPI device so Windows does not warn about missing device
drivers.
Port of commit 907c85ad48dd ("soc/intel/alderlake: Hide PMC and IOM
devices").
BUG=none
TEST=Verified _STA method from ACPI tables in OS. USB-C drive is
detected in OS.
Signed-off-by: Kapil Porwal <kapilporwal@google.com>
Change-Id: Ic62172bee9120d260a3cd60770ef780cb7dce860
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69576
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/meteorlake/acpi/tcss.asl b/src/soc/intel/meteorlake/acpi/tcss.asl
index c2212f0..817afdd 100644
--- a/src/soc/intel/meteorlake/acpi/tcss.asl
+++ b/src/soc/intel/meteorlake/acpi/tcss.asl
@@ -327,6 +327,8 @@
IOM_BASE_ADDR, IOM_BASE_ADDR_MAX, 0x0,
IOM_BASE_SIZE,,,)
})
+ /* Hide the device so that Windows does not complain on missing driver */
+ Name (_STA, 0xB)
}
/*
diff --git a/src/soc/intel/meteorlake/pmc.c b/src/soc/intel/meteorlake/pmc.c
index dbfc4be..bdd7a3b 100644
--- a/src/soc/intel/meteorlake/pmc.c
+++ b/src/soc/intel/meteorlake/pmc.c
@@ -103,6 +103,8 @@
acpigen_write_name_string("_HID", PMC_HID);
acpigen_write_name_string("_DDN", "Intel(R) Meteor Lake IPC Controller");
+ /* Hide the device so that Windows does not complain on missing driver */
+ acpigen_write_STA(ACPI_STATUS_DEVICE_HIDDEN_ON);
/*
* Part of the PCH's reserved 32 MB MMIO range (0xFC800000 - 0xFE7FFFFF).